Change Of State Of Opto-Isolated Inputs.; Types Of Event - GE MiCOM P40 Agile Technical Manual

Measurements and Recording
MiCOM P40 Agile P442, P444
VIEW RECORDS
LCD Reference
Fault Location
IA
IB
IC
VAN
VBN
VCN
Fault Resistance
Fault in Zone
Trip Elements 2
Start Elements 2
Select Report
Report Text
Report Type
Report Data
Reset Indication
For extraction from a remote source via communications, refer to Chapter P44x/EN CM,
(Commissioning) where the procedure is fully explained.

Types of Event

An event may be a change of state of a control input or output relay, an alarm condition,
setting change etc. The following sections show the various items that constitute an event.
1.2.2

Change of state of opto-isolated inputs.

If one or more of the opto (logic) inputs has changed state since the last time that the
protection algorithm ran, the new status is logged as an event. When this event is selected to
be viewed on the LCD, three applicable cells will become visible as shown below;
Opto input Events
"LOGIC INPUTS"
"Event Value
0101010101010101"
The Event Value is an 8 or 16 bit word showing the status of the opto inputs, where the least
significant bit (extreme right) corresponds to opto input 1 etc. The same information is
present if the event is extracted and viewed via PC.
Description
When calculated the fault location can be found (distance in km or miles,
impedance or percentage of line length, set in 'MEASUREMENT SETUP'
column). See section 1.4.
Magnitude of phase A current
Magnitude of phase B current
Magnitude of phase C current
Magnitude of phase A voltage
Magnitude of phase B voltage
Magnitude of phase C voltage
Fault resistance
None, Zone 1, Zone 2, Zone P, Zone Q, Zone 3 or Zone 4
Trip I2>2, Trip I2>3, Trip I2>4, Trip VN>1, Trip VN>2, Trip Zq, Trip V<3,
Trip V<4, Trip V>3, Trip V>4, Trip I<1, Trip I<2, Trip F<1, Trip F<2, Trip
F<3, Trip F<4, Trip F>1, Trip F>2
Start V<3, Start V<4, Start V>3, Start V>4, Start I<1, Start I<2, Start F<1,
Start F<2, Start F<3 ,Start F<4, Start F>1 or Start F>2
Setting range from 0 to 4.
This selects the required maintenance report from the possible 5 that may
be stored. A value of 0 corresponds to the latest report and so on.
Up to 32 Character description of the occurrence (refer to following
sections)
These cells are numbers representative of the occurrence. They form a
specific error code which should be quoted in any related correspondence
to AREVA T&D P&C Ltd.
Either Yes or No. This serves to reset the trip LED indications provided that
the relevant protection element has reset.
P44x/EN MR/Hb6
(MR) 7-7